​​​J.R.R. Tolkien spent decades mapping out Middle-earth on graph paper because everything had to be invented from scratch (and given a name.) Many of his maps weren't even published until after he died, but today's fantasy cartographers owe a great debt to his work. They also have a post-modern understanding that to create a believable fantasy map, they have to sow doubt in the minds of readers whether we should trust the mapmakers. With Isaac Stewart, Priscilla Spencer, Ethan Gilsdorf and Stefan Ekman.